I also follow space in FB...

Northern lights (aurora borealis): What they are & how to see them

https://www.space.com/15139-northern-lights-auroras-earth-facts-sdcmp.html?utm_campaign=socialflow&utm_source=facebook.com&utm_content=space.com&utm_medium=social&fbclid=IwAR03r8za_LQ6vofV89rAYjXbimwx6pQgk0Mhj1bX2EesxENoklw7ygFbANw